資料來源 : Webster's Revised Unabridged Dictionary (1913)

Turnbull's blue \Turn"bull's blue`\ (Chem.)
   The double cyanide of ferrous and ferric iron, a dark blue
   amorphous substance having a coppery luster, used in dyeing,
   calico printing, etc. Cf. {Prussian blue}, under {Prussian}.